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Display an Error Message for an OS Error Code using Delphi

Title: Display an Error Message for an OS Error Code using Delphi Delphi's SysErrorMessage function converts OS error codes into a string - an error message string that corresponds to the specified OS error code.. GetLastError returns the last error reported by an operating system API call. Note: calling getLastError resets the operating system error state - do not call it two times "in a row" - the second call will clear the "first" error. Convert the OS Error Code into a User Friendly Message Here's a quick example - trying to delete a non existing folder. RemoveDir deletes an existing empty directory. The return value is true if a new directory was successfully deleted, false if an error occurred. Read GetLastError to find out why an error occurred. RemoveDir('c:\NoSuchFolder') ; ShowMessage('System Error Message: '+ SysErrorMessage(GetLastError)) ;